Known Exploited Vulnerability: CVE-2021-36742

Trend Micro Multiple Products Improper Input Validation Vulnerability

Catalog version: 2026.06.03 Date added: 2021-11-03 Due date: 2021-11-17 CISA catalog

Vendor: Trend Micro

Product: Apex One, Apex One as a Service, and Worry-Free Business Security

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: Unknown

Notes: https://success.trendmicro.com/dcx/s/solution/000287819?language=en_US, https://success.trendmicro.com/dcx/s/solution/000287820?language=en_US https://nvd.nist.gov/vuln/detail/CVE-2021-36742

CWEs

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